JPS6197436A - Production of two-layered structural yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for producing a two-layer structured yarn consisting of a spun yarn in the core and a processed filament yarn in the periphery by a twisting process.

(Prior Art) Various methods have been proposed for producing yarns with a two-layer or three-layer structure made of two materials, staples and long fibers, or yarns similar thereto. For example, a method using a general plying/twisting machine or twisting machine, a method using a double covering method, a method using static electricity to open long fibers and wrapping other fiber yarns including spun yarn, and a method using a spinning machine. Core spun yarns, which are obtained by using long fiber yarns or spun yarns as cores, are generally known.

(Problems to be Solved by the Invention) However, when the aligned yarns are twisted or combined, the relative positional relationship between the yarns fluctuates, leading to yarn unevenness and uneven spacing. It does not become a structural thread. The double cover one type can obtain a yarn form close to 2/1i14i# yarn, but the productivity is low and generally depends on the number of twists.
With a production speed of 0 to 25 m/min, there is a limit to the amount of winding on the bobbin, and there are many knots (limited to relatively small quantities of use).If the fabric is made while opening using static electricity, it may cause uneven opening and may not be sufficient. Texture and functional effects have not been obtained.The method using spinning @ has the drawbacks of low productivity and uneven spacing, and is limited in terms of use.

The present inventors have solved this uneven spacing on a yarn twisting machine, and have developed a new method to obtain a two-layer yarn with a core made of spun yarn and a periphery made of processed filament yarn, while maintaining reasonably high productivity with a small investment. As a result of intensive research aimed at developing a method, a simple and easy method was discovered.

(Means for Solving the Problems) The gist of the present invention is to provide a composite yarn forming element that incorporates a core yarn supply passage provided in the center and a plurality of effect yarn supply passages that merge into the core yarn supply passage from the side. A method for producing a two-layered yarn is characterized in that a spun yarn is used as the core yarn, a processed long fiber yarn is used as the effect yarn, and each effect yarn is fed and twisted at different points of confluence.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows a composite yarn forming element 0) used in the present invention. (1) is a core yarn supply passage provided in the center, and (2) + (3) are effect yarns provided so that they merge from the side of the core yarn supply passage (1) at different merging points. This is a supply passage. A two-layer structure yarn that can be obtained by supplying multiple effect yarns at different confluence points rather than at the same confluence point, or more precisely, an effect yarn layer in which single to multiple effect yarns are distributed in the yarn axis direction. The two-layer structured yarn has a remarkable effect on color effect, appearance, and improvement of friction melting resistance when used as sports clothing.

The mechanism of improvement in friction melting resistance is presumed to be due to the slight misalignment between the long fiber processed yarn layer on the surface of the yarn and the spun yarn in the core. The intersecting angle (/?) of the core yarn supply passage (1) and the effect yarn supply passage (2) is 30 to 60. A range of .degree. is preferred, and each intersecting angle may be the same or stationary. Second
The figure shows an example of the composite yarn forming element (A) shown in FIG. 1 attached to the yx yarn twisting machine. It is preferable to use a magnetic tensor for the core yarn (4) to enable tension control.

In this case, it is necessary to set the tension of the core yarn (4) at a higher level than that of the effect yarn (5) l (6). Effect thread (5)
+ (6) uses long fiber processed yarn to increase the coverage of the core yarn (4).

Effect yarns (5) and (6) are the core yarn (4) and its confluence point Q
Ring Traveler-00 at the twisting point where l, (14)
〇(7) , (8) I (9) +01,0η
, (1■ is the core thread (4) and the effect thread (5).

(6) shows a guide until it is supplied to the composite thread forming element (A).

FIG. 3 shows the state in which the composite yarn is formed within the composite yarn forming element (A), in which (4) is the core yarn, and (5) and (6) are the effect yarns.

The core yarns used in the present invention are spun yarns such as cotton, cotton/polyester fibers, and acrylic fibers, and the effect yarns are long fiber processed yarns such as polyester long fibers and polyamide long fibers, especially crimped processed yarns. Preferably used.

(Example) The present invention will be explained below with reference to Examples.

Example: The composite yarn forming element shown in Fig. 1 was attached to a twisting machine (D, T, l?') made by Ishikawa Seisakusho, and the device shown as a model in Fig. 2 was used. /1. 8D75/36 polyester long fiber processed yarn was used for each of the two effect yarns. The rotational speed of the twisting machine was 7500 T/M, the number of twists was 200 T/M (Z), the core yarn tension was 352/yarn, and the effect yarn tension was 20 f/yarn and 17 v/yarn, respectively.

According to the present invention, there is no particular thread breakage, and process passability is good.
The obtained yarn also had a high coverage of the effect yarn and was uniform. Using this yarn, I used a M-4B 20 () double jersey circular knitting machine with a reversible structure, using the two-layer structure yarn of the present invention for the front yarn, and using 5D10 Ro/24 polyester filament processed yarn for the back side, using the normal process. When dyed and finished, the color was deep, the texture was good due to the covering effect of the spun yarn and polyester filament processed yarn, and the friction melting effect in gymnasiums was also excellent for use as training wear for sports clothing. .

(Effects of the Invention) According to the present invention, a two-layer yarn can be obtained with a simple device and a rational production process while maintaining high productivity.

Furthermore, the two-layer structured yarn obtained by the present invention has a high coverage of the core yarn, is uniform, and has a deep color effect. In addition, the fabric made of the two-layer yarn of the present invention has excellent friction and melting prevention effects, and this functionality can be superior to fabrics made of core yarn material, such as 100% cotton material.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a model of an element for forming a composite yarn attached to the present invention, Figure 2 is a model process diagram of the element attached to a twisting machine, and Figure 3 is a state diagram of forming a two-layered yarn of the present invention. be. A... Element for forming composite yarn, 1... Passage for supplying core yarn,
2.6... Effect yarn supply passage, 4... Core yarn, 5.6
...Effect thread, 13.14...Confluence point, 15...Ring traveler

Claims (1)

[Claims] Spun yarn is used as the core yarn, and long fiber processed yarn is used as the effect yarn in a composite yarn forming element that has a built-in core yarn supply passage provided in the center and a plurality of effect yarn supply passages that merge into the passage from the side. A method for producing a two-layer structured yarn, characterized in that each effect yarn is fed and twisted at different points of confluence.